NHD‐2.23‐12832UCY3 Datasheet by Newhaven Display Intl

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Newhaven Display Internationall Inc. www.newhavendisglay.com nhtech@newhavendisplay.com nhsa|es@newhavendisplay.com
NHD2.2312832UCY3
GraphicOLEDDisplayModule
NHD‐  NewhavenDisplay
2.23‐  2.23”diagonalsize
12832‐  128x32pixelresolution
UC‐  Model
Y‐  EmittingColor:Yellow
3‐ +3Vpowersupply
NewhavenDisplayInternational,Inc.
2511TechnologyDrive,Suite101
ElginIL,60124
Ph:8478448795Fax:8478448796
www.newhavendisplay.com
nhtech@newhavendisplay.com nhsales@newhavendisplay.com
[2]
DocumentRevisionHistory
RevisionDateDescriptionChangedby
05/1/2011InitialProductRelease‐
12/22/2013ElectricalcharacteristicsandmechanicaldrawingupdatedJN
FunctionsandFeatures
128x32pixelresolution
BuiltinSSD1305controller
ParallelorserialMPUinterface
Single,lowvoltagepowersupply
RoHScompliant
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1 2 3 4 5 6
A
B
C
D
B
C
D
1 2 3 4 5 6
Mechanical Drawing
A
[3]
The drawing contained herein is the exclusive property of Newhaven Display International, Inc. and shall not be copied, reproduced, and/or disclosed in any format without permission.
NHD-2.23-12832UCY3
02/22/13
Date
Unit Model:
mm
Gen. Tolerance
±0.3mm
Rev Description Date
CONFIDENTIAL
[4]
InterfaceDescription
ParallelInterface:
PinNo.SymbolExternal
Connection
FunctionDescription
1VSSPowerSupplyGround
2VDDPowerSupplySupplyVoltageforOLEDandlogic.
3NC‐NoConnect
4D/CMPURegisterselectsignal.D/C=0:Command, D/C=1:Data
5R/Wor/WRMPU6800interface:
Read/Writeselectsignal,R/W=1:ReadR/W:=0:Write
8080interface:
ActiveLOWWritesignal.
6Eor/RDMPU6800interface:
Operationenablesignal.Fallingedgetriggered.
8080interface:
ActiveLOWReadsignal.
714DB0
DB7MPU8bitBidirectionaldatabuslines.
15NC‐NoConnect
16/RESMPUActiveLOWResetsignal.
17/CSMPUActiveLOWChipSelectsignal.
18NC‐NoConnect
19BS2MPUMPUInterfaceSelectsignal.
20BS1MPUMPUInterfaceSelectsignal.
SerialInterface:
PinNo.SymbolExternal
Connection
FunctionDescription
1VSSPowerSupplyGround
2VDDPowerSupplySupplyVoltageforOLEDandlogic.
3NC‐NoConnect
4D/CMPURegisterselectsignal.D/C=0:Command, D/C=1:Data
56VSSPowerSupplyGround
7SCLKMPUSerialClocksignal.
8SDINMPUSerialDataInputsignal.
9NC‐NoConnect
1014VSSPowerSupplyGround
15NC‐NoConnect
16/RESMPUActiveLOWResetsignal.
17/CSMPUActiveLOWChipSelectsignal.
18NC‐NoConnect
19BS2MPUMPUInterfaceSelectsignal.
20BS1MPUMPUInterfaceSelectsignal.
[5]
I2CInterface:
PinNo.SymbolExternal
Connection
FunctionDescription
1VSSPowerSupplyGround
2VDDPowerSupplySupplyVoltageforOLEDandlogic.
3NC‐NoConnect
4SA0MPUSlaveAddressSelectionsignal.
56VSSPowerSupplyGround
7SCLMPUSerialClocksignal.
8SDAINMPUSerialDatainputsignal(pins8and9canbe tiedtogether).
9SDAOUTMPUSerialDataoutputsignal(pin9canbenoconnect).
1014VSSPowerSupplyGround
15NC‐NoConnect
16/RESMPUActiveLOWResetsignal.
17VSSPowerSupplyGround
18NC‐NoConnect
19BS2MPUMPUInterfaceSelectsignal.
20BS1MPUMPUInterfaceSelectsignal.
MPUInterfacePinSelections
Pin
Name
6800Parallel
8bitinterface
8080Parallel
8bitinterface
Serial
Interface
I2C
Interface
BS21100
BS10101
MPUInterfacePinAssignmentSummery
Bus
Interface
Data/CommandInterface ControlSignals
D7D6D5D4D3D2D1 D0 ER/W /CS D/C /RES
8bit6800D[7:0]ER/W /CS D/C /RES
8bit8080D[7:0]/RD /WR /CS D/C /RES
SPITieLOWNCSDIN SCLK TieLOW /CS D/C /RES
I2CTieLOWSDAINSDAOUT SCL TieLOW SA0 /RES
NHD-2.23-12832UCxx M65 Parallel Interface NHD-E.23-12832UCxx lBB Parallel Interface N1: /RES 11127 11125 n33 11111 E nu: van 1151 N: «RES 1111? 11115 um um /RD 11/1: vnn Slasa «cs N: use an use mm m N: vss use 1C5 NC mas. D34 11112 man we Nlc use 17011n‘ vunJ; mm mm lvunJ; mu. hmemmnsuzu mm bwmvmm—afimu um mmmxmmmm \\ L.“ mmmmmmmmmzx \m naucaaaa are \m nuanaaua\\a MPU MPU NHD-2.83-18832UCXX Ser i a! Inter face 51 NC A355 1137 NHD-2.83-18832UCXX [EC Inter face mas uaa sum 2 Inc vnn 115111: mes 11117 11135 11113 151mour 1: 5m vun use ICS Nc 11136 11114 11112 scLKR/u nc we use ICS Nc nae. 11114 51mm SCL M: Na v55 17 J7 L i J7 $ $ L L VD“ UDD |J7 $ $ $ L L J7 J7 i VDD vnn kw “m m m a A L. m 1 J a 2‘ g a 5 a a; a a g \ 3 u. \ MPU
Wi
r
r
ingDiagrams
[6]
[7]
ElectricalCharacteristics
ItemSymbolCondition Min. Typ. Max.Unit
OperatingTemperatureRangeTopAbsoluteMax 40 +85⁰C
StorageTemperatureRangeTstAbsoluteMax 40 +90⁰C
SupplyVoltageVDD‐3.3 3.5V
SupplyCurrent(logic)IDDTa=25°C,VDD=3.3V 180 300µA
SupplyCurrent(display)ICC50%ON,VDD=3.3V 60 70mA
100%ON,VDD=3.3V 108 120mA
SleepModeCurrentIDD+ICCSLEEP‐315µA
“H”LevelinputVih0.8*VDD VDDV
“L”LevelinputVilVSS 0.2*VDDV
“H”LeveloutputVoh0.9*VDD VDDV
“L”LeveloutputVolVSS 0.1*VDDV
OpticalCharacteristics
ItemSymbolCondition Min. Typ. Max.Unit
ViewingAngle
TopAV‐80 ‐ ⁰
ViewingAngle
BottomAV‐80 ‐ ⁰
ViewingAngle
LeftAH‐80 ‐ ⁰
ViewingAngle
RightAH‐80 ‐ ⁰
ContrastRatioCr2000:1 ‐‐
ResponseTime(rise)Tr‐ ‐10 ‐ us
ResponseTime(fall)Tf‐ ‐10 ‐ us
Brightness50%checkerboard 100 120 ‐ cd/m2
LifetimeTa=25°C,50%
checkerboard
40,000 ‐‐Hrs
Note:Lifetimeattypicaltemperatureisbasedonacceleratedhightemperatureoperation.Lifetimeistestedat
average50%pixelsonandisratedasHoursuntilHalfBrightness.TheDisplayOFFcommandcanbeusedto
extendthelifetimeofthedisplay.
Luminanceofactivepixelswilldegradefasterthaninactivepixels.Residual(burnin)imagesmayoccur.Toavoid
this,everypixelshouldbeilluminateduniformly.
[8]
BuiltinSSD1305controller.
InstructionTable
InstructionCodeDescriptionRESET
value
D/CHEXDB7DB6DB5 DB4 DB3 DB2 DB1 DB0
SetLowerColumn
StartAddress
000~0F000 0 X3 X2 X1 X0 SetthelowernibbleofthecolumnstartaddressregisterforPage
AddressingMode.
0
SetHigher
ColumnStart
Address
010~1F000 1 X3 X2 X1 X0 SetthehighernibbleofthecolumnstartaddressregisterforPage
AddressingMode.
0
SetMemory
AddressingMode
020
A[1:0]
0
*
0
*
1
*
0
*
0
*
0
*
0
A1
0
A0
A[1:0]=00b,HorizontalAddressingMode
A[1:0]=01b,VerticalAddressingMode
A[1:0]=10b,PageAddressingMode
A[1:0]=11b,Invalid
10b
SetColumn
Address
021
A[7:0]
B[7:0]
0
A7
B7
0
A6
B6
1
A5
B5
0
A4
B4
0
A3
B3
0
A2
B2
0
A1
B1
1
A0
B0
Setupcolumnstartandendaddress
A[7:0]:Columnstartaddress.Range:0131d
B[7:0]:Columnendaddress.Range:0131d
0
131d
SetPageAddress022
A[2:0]
B[2:0]
0
*
*
0
*
*
1
*
*
0
*
*
0
*
*
0
A2
B2
1
A1
B1
0
A0
B0
Setuppagestartandendaddress
A[2:0]:Pagestartaddress.Range:07d
B[2:0]:Pageendaddress.Range:07d
0
7d
SetDisplayStart
Line
040~7F01X5 X4 X3 X2 X1 X0 SetdisplayRAMdisplaystartlineregisterfrom063d.0
SetContrast
Control
081
A[7:0]
1
A7
0
A6
0
A5
0
A4
0
A3
0
A2
0
A1
1
A0
Doublebytecommandtoselect1outof256contraststeps.Contrast
increasesasthevalueincreases.
0x80
SetBrightness082
A[7:0]
1
A7
0
A6
0
A5
0
A4
0
A3
0
A2
1
A1
0
A0
Doublebytecommandtoselect1outof256brightnesssteps.
Brightnessincreasesasthevalueincreases.
0x80
SetLookUpTable091
X[5:0]
A[5:0]
B[5:0]
C[5:0]
1
*
*
*
*
0
*
*
*
*
0
X5
A5
B5
C5
1
X4
A4
B4
C4
0
X3
A3
B3
C3
0
X2
A2
B2
C2
0
X1
A1
B1
C1
1
X0
A0
B0
C0
SetcurrentdrivepulsewidthofBank0,ColorA,BandC.
Bank0:X[5:0]=31to63.Pulsewidthsetto32to64clocks.
ColorA:X[5:0]=31to63.Pulsewidthsetto32to64clocks.
ColorB:X[5:0]=31to63.Pulsewidthsetto32to64clocks.
ColorC:X[5:0]=31to63.Pulsewidthsetto32to64clocks.
Note:ColorDpulsewidthisfixedat64clocks.
0x31
0x3F
0x3F
0x3F
SetBankColorof
Bank1toBank16
(Page0)
092
A[7:0]
B[7:0]
C[7:0]
D[7:0]
1
A7
B7
C7
D7
0
A6
B6
C6
D6
0
A5
B5
C5
D5
1
A4
B4
C4
D4
0
A3
B3
C3
D3
0
A2
B2
C2
D2
1
A1
B1
C1
D1
0
A0
B0
C0
D0
SetsthebankcolorofBank1~Bank16toanyoneofthe4colorsA,B,C,
andD.
A[1:0]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK1.
A[3:2]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK2.
.
.
.
D[5:4]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK15.
D[7:6]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK16.
SetBankColorof09310010011SetsthebankcolorofBank17~Bank32toanyoneofthe4colors
[9]
Bank17toBank32
(Page1)
A[7:0]
B[7:0]
C[7:0]
D[7:0]
A7
B7
C7
D7
A6
B6
C6
D6
A5
B5
C5
D5
A4
B4
C4
D4
A3
B3
C3
D3
A2
B2
C2
D2
A1
B1
C1
D1
A0
B0
C0
D0
A,B,C,andD.
A[1:0]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK17.
A[3:2]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK18.
.
.
.
D[5:4]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK31.
D[7:6]:00b,01b,10b,or11bforColor=A,B,C,orDofBANK32.
SetSegment
Remap
0A0/A11010000X0 X[0]=0;Columnaddress0ismappedtoSEG0
X[0]=1;Columnaddress131ismappedtoSEG0
0
EntireDisplayON0A4/A51010010X0 X[0]=0;ResumeRAMcontentdisplay.OutputfollowsRAMcontent.
X[0]=1;EntiredisplayON.OutputignoresRAMcontent.
0
SetNormal/
InverseDisplay
0A6/A71010011X0 X[0]=0;Normaldisplay.
X[0]=1;Inversedisplay.
0
SetMultiplex
Ratio
0A8
A[5:0]
1
*
0
*
1
A5
0
A4
1
A3
0
A2
0
A1
0
A0
SetMUXratiotoN+1MUX
N=A[5:0];from16MUXto64MUX(0to14areinvalid)
64
Dimmodesetting0AB
A[3:0]
B[7:0]
C[7:0]
1
*
B7
C7
0
*
B6
C6
1
*
B5
C5
0
*
B4
C4
1
A3
B3
C3
0
A2
B2
C2
1
A1
B1
C1
1
A0
B0
C0
A[3:0]=reserved.Setas0000b
B[7:0]=SetcontrastforBANK0.Range0255d.Refertocommand
81h.
C[7:0]=Setbrightnessforcolorbank.Range0255d.Referto
command82h.
Master
configuration
0AD
AE
1
1
0
0
1
0
0
0
1
1
1
1
0
1
1
0
SelectsexternalVCCsupply
AEh
SetDisplayON/
OFF
0AC/
AE/
AF
101011A1 A0 ACh=DisplayONindimmode
AEh=DisplayOFF(sleepmode)
AFh=DisplayONinnormalmode
AEh
SetPageStart
Address
0B0~B710110X2 X1 X0 SetGDRAMPageStartAddressforPageAddressingModeusingX[2:0].
PAGE0~PAGE7
SetCOMOutput
ScanDirection
0C0/C8110 0 X3 000X[3]=0;Normalmode.ScanfromCOM0toCOM[N1]
X[3]=1;Remappedmode.ScanfromCOM[N1]toCOM0
0
SetDisplayOffset0D3
A[5:0]
1
*
1
*
0
A5
1
A4
0
A3
0
A2
1
A1
1
A0
SetverticalshiftbyCOMfrom0~63.0
SetDisplayClock
DivideRatio/
Oscillator
Frequency
0D5
A[7:0]
1
A7
1
A6
0
A5
1
A4
0
A3
1
A2
0
A1
1
A0
A[3:0]=Definethedivideratioofthedisplayclocks.
Divideratio=A[3:0]+1
A[7:4]=SettheOscillatorFrequency.Frequencyincreaseswiththe
valueofA[7:4].Range0000b~1111b.
0000b
0111b
SetAreaColor
ModeON/OFF&
LowPower
DisplayMode
0D8
X[5:0]
1
0
1
0
0
X5
1
X4
1
0
0
X2
0
0
0
X0
X[5:4]=00b;Monochromemode
X[5:4]=11b;AreaColormode
X[2]=0andX[0]=0;Normalpowermode
X[2]=1andX[0]=1;Setlowpowerdisplaymode
00
00
SetPrecharge0D911011001A[3:0]=Phase1periodofupto15DCLKclocks.0isinvalid.
A[7:4]=Phase2periodofupto15DCLKclocks.0isinvalid.
2h
2h
http: www.mewhavendisp‘avfiom app notes SSD1305.pdf
[10]
PeriodA[7:0]A7A6A5 A4 A3 A2 A1 A0
SetCOMpins
Hardware
configuration
0DA
X[5:4]
1
0
1
0
0
X5
1
X4
1
0
0
0
1
1
0
0
X[4]=0;SequentialCOMpinconfiguration
X[4]=1;AlternativeCOMpinconfiguration
X[5]=0;DisableCOMLeft/Rightremap
X[5]=1;EnableCOMLeft/Rightremap
1
1
SetVCOMH
DeselectLevel
0DB
A[5:2]
1
0
1
0
0
A5
1
A4
1
A3
0
A2
1
0
1
0
A[5:2]=0000b;VCOMH=~0.43*VCC
A[5:2]=1101b;VCOMH=~0.77*VCC
A[5:2]=1111b;VCOMH=~0.83*VCC
1101
EnterRead
ModifyWrite
mode
0E011100000EntertheRead/Modify/Writemode.
NOP0E311100011CommandforNoOperation
ExitReadModify
Writemode
0EE11101110ExittheRead/Modify/Writemode.
Fordetailedinstructioninformation,seedatasheet:http://www.newhavendisplay.com/app_notes/SSD1305.pdf
http: www.newhavendisp|ay.com app notes SSD1305.pdf 6800-MPU Parallel Interface 8080-MPU Parallel Interface
[11]
MPUInterface
Fordetailedtiminginformation,seedatasheet:http://www.newhavendisplay.com/app_notes/SSD1305.pdf
6800MPUParallelInterface
Theparallelinterfaceconsistsof8bidirectionaldatapins,R/W,D/C,E,and/CS.
ALOWonR/Windicateswriteoperation,andHIGHonR/Windicatesreadoperation.
ALOWonD/Cindicates“Command”readorwrite,andHIGHonD/Cindicates“Data”readorwrite.
TheEinputservesasdatalatchsignal,while/CSisLOW.DataislatchedatthefallingedgeofEsignal.
FunctionER/W /CS D/C
WriteCommand↓000
ReadStatus100
WriteData↓001
ReadData↓101
8080MPUParallelInterface
Theparallelinterfaceconsistsof8bidirectionaldatapins,/RD,/WR,D/C,and/CS.
ALOWonD/Cindicates“Command”readorwrite,andHIGHonD/Cindicates“Data”readorwrite.
Arisingedgeof/RSinputservesasadatareadlatchsignalwhile/CSisLOW.
Arisingedgeof/WRinputservesasadata/commandwritelatchsignalwhile/CSisLOW.
Function/RD/WR /CS D/C
WriteCommand1↑ 0 0
ReadStatus100
WriteData10 1
ReadData↑101
Alternatively,/RDand/WRcanbekeptstablewhile/CSservesasthedata/commandlatchsignal.
Function/RD/WR /CS D/C
WriteCommand100
ReadStatus010
WriteData101
ReadData011
Serial Interface IZC Interface http: www.mewhavendisp‘ayxom app notes SSD1305.pdf
[12]
SerialInterface
TheserialinterfaceconsistsofserialclockSCLK,serialdataSDIN,D/C,and/CS.
D0actsasSCLKandD1actsasSDIN.D2shouldbeleftopen.D3~D7,E,andR/WshouldbeconnectedtoGND.
Function/RD/WR /CS D/C D0
WriteCommand0000
WriteData0001
SDINisshiftedintoan8bitshiftregisteroneveryrisingedgeofSCLKintheorderofD7,D6,…D0.
D/CissampledoneveryeighthclockandthedatabyteintheshiftregisteriswrittentotheGDRAMor
commandregisterinthesameclock.
Note:Readisnotavailableinserialmode.
I2CInterface
TheI2CinterfaceconsistsofaslaveaddressbitSA0,I2CbusdatasignalSDA,andI2CbusclocksignalSCL.
D1andD2canbetiedtogether,andactasSDA.D0actsasSCL.Boththedataandclocksignalsmustbe
connectedtopullupresistors./RESisusedtoinitializethedevice.
Note:SA0bitallowsthedevicetohaveaslaveaddressofeither“0111100”or“0111101”.
Note:DataandacknowledgementaresentthroughtheSDA.TheITOtrackresistanceandthepullup
resistanceatSDAbecomesavoltagepotentialdivider.Asaresult,itmaynotbepossibletoattainavalidlogic
“0”levelonSDAfortheACKsignal.SDAINmustbeconnected,butSDAOUTmaybedisconnectedandtheACK
signalwillbeignoredontheI2Cbus.
Fordetailedprotocolinformation,seedatasheet:http://www.newhavendisplay.com/app_notes/SSD1305.pdf
[13]
ExampleInitializationSequence:
Set_Display_On_Off(0x00); //DisplayOff(0x00/0x01)
Set_Display_Clock(0x10); //SetClockas160Frames/Sec
Set_Multiplex_Ratio(0x1F); //1/32Duty(0x0F~0x3F)
Set_Display_Offset(0x00); //ShiftMappingRAMCounter(0x00~0x3F)
Set_Start_Line(0x00);  //SetMappingRAMDisplayStartLine(0x00~0x3F)
Set_Master_Config(0x00); //DisableEmbeddedDC/DCConverter(0x00/0x01)
Set_Area_Color(0x05);  //SetMonochrome&LowPowerSaveMode
Set_Addressing_Mode(0x02); //SetPageAddressingMode(0x00/0x01/0x02)
Set_Segment_Remap(0x01); //SetSEG/ColumnMapping(0x00/0x01)
Set_Common_Remap(0x08); //SetCOM/RowScanDirection(0x00/0x08)
Set_Common_Config(0x10); //SetAlternativeConfiguration(0x00/0x10)
Set_LUT(0x3F,0x3F,0x3F,0x3F); //DefineAllBanksPulseWidthas64Clocks
Set_Contrast_Control(Brightness);//SetSEGOutputCurrent
Set_Area_Brightness(Brightness);//SetBrightnessforAreaColorBanks
Set_Precharge_Period(0xD2); //SetPreChargeas13Clocks&Dischargeas2Clock
Set_VCOMH(0x08);  //SetVCOMDeselectLevel
Set_Entire_Display(0x00); //DisableEntireDisplayOn(0x00/0x01)
Set_Inverse_Display(0x00); //DisableInverseDisplayOn(0x00/0x01)
Fill_RAM(0x00);//ClearScreen
Set_Display_On_Off(0x01); //DisplayOn(0x00/0x01)
t www. newhavendisglayLom [59ec5[greca ufions.9df http: www.newhavendisplay.com Index.php?main page=terms
[14]
QualityInformation
TestItemContentofTestTestConditionNote
HighTemperaturestorageTesttheenduranceofthedisplayathigh
storagetemperature.
+90C,240hrs 2
LowTemperaturestorageTesttheenduranceofthedisplayat low
storagetemperature.
40C,240hrs 1,2
HighTemperature
Operation
Testtheenduranceofthedisplayby
applyingelectricstress(voltage&current)
athightemperature.
+85C240hrs 2
LowTemperature
Operation
Testtheenduranceofthedisplayby
applyingelectricstress(voltage&current)
atlowtemperature.
40C,240hrs 1,2
HighTemperature/
HumidityOperation
Testtheenduranceofthedisplayby
applyingelectricstress(voltage&current)
athightemperaturewithhighhumidity.
+60C,90%RH,240hrs1,2
ThermalShockresistanceTesttheenduranceofthedisplayby
applyingelectricstress(voltage&current)
duringacycleoflowandhigh
temperatures.
40C,30min‐>25C,5min‐>
85C,30min=1cycle
100cycles
VibrationtestTesttheenduranceofthedisplayby
applyingvibrationtosimulate
transportationanduse.
1022Hz,15mmamplitude.
22500Hz,1.5G
30minineachof3directions
X,Y,Z
3
AtmosphericPressuretestTesttheenduranceofthedisplayby
applyingatmosphericpressuretosimulate
transportationbyair.
115mbar,40hrs 3
StaticelectricitytestTesttheenduranceofthedisplayby
applyingelectricstaticdischarge.
VS=800V,RS=1.5kΩ,CS=100pF
Onetime
Note1:Nocondensationtobeobserved.
Note2:Conductedafter2hoursofstorageat25C,0%RH.
Note3:Testperformedonproductitself,notinsideacontainer.
EvaluationCriteria:
1:Displayisfullyfunctionalduringoperationaltestsandafteralltests,atroomtemperature.
2:Noobservabledefects.
3:Luminance>50%ofinitialvalue.
4:Currentconsumptionwithin50%ofinitialvalue
PrecautionsforusingOLEDs/LCDs/LCMs
SeePrecautionsatwww.newhavendisplay.com/specs/precautions.pdf
WarrantyInformationandTerms&Conditions
http://www.newhavendisplay.com/index.php?main_page=terms
NewhavenDisplayInternational,Inc.reservestherighttoalterthisproductorspecificationatanytimewithoutnotification.

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